WO2023011522A1

WO2023011522A1 - Data transmission method and related apparatus

Info

Publication number: WO2023011522A1
Application number: PCT/CN2022/109963
Authority: WO
Inventors: 雷珍珠; 周化雨
Original assignee: 展讯半导体(南京)有限公司
Priority date: 2021-08-03
Filing date: 2022-08-03
Publication date: 2023-02-09
Also published as: CN115707129A

Abstract

Embodiments of the present application relate to the technical field of communications, and provide a data transmission method and a related apparatus. The data transmission method comprises: a network device sends, to a terminal device, first configuration information for indicating an offset; and, according to the first configuration information, the terminal device determines to, between a first time domain position and a second time domain position, not receive downlink data sent by the network device. The first time domain position is earlier than the second time domain position, the first time domain position is determined according to the offset, and the second time domain position is determined according to a starting time domain position of a first uplink transmission resource, thereby preventing uplink data sent by the terminal device from colliding in time with the downlink data sent by the network device, thus improving the reliability of data transmission.

Description

Data transmission method and related device

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method and a related device.

Background technique

In non-terrestrial networks (NTN), when a terminal device uses uplink transmission resources to send data to a network device, it will send data in advance according to a timing advance (TA) value.

Due to the large propagation delay between the terminal device and the network device in the NTN network, the TA value is calculated by the terminal device based on its own location information, so the network device cannot determine the specific time domain location where the terminal device actually sends uplink data.

Since a half-duplex terminal device cannot receive and send data at the same time, the uplink data sent by the terminal device may collide with the downlink data sent by the network device in time, thereby reducing the reliability of data transmission.

Contents of the invention

The embodiment of the present application provides a data transmission method. A time interval is determined by the start time domain position and offset of the uplink transmission resource. In this interval, the terminal device does not receive the downlink data sent by the network device, and at the same time, the network device does not send The terminal device sends downlink data, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.

In the first aspect, the embodiment of the present application provides a data transmission method, the method includes:

The terminal device receives the first configuration information sent by the network device, where the first configuration information is used to indicate the offset; the terminal device determines not to receive the downlink sent by the network device between the first time domain position and the second time domain position Data; wherein, the first time domain position is earlier than the second time domain position, the first time domain position is determined according to the offset, and the second time domain position is determined according to the start time domain position of the first uplink transmission resource , the first uplink transmission resource is a resource used by the terminal device to send uplink data.

In the embodiment of the present application, the offset can be understood as K_offset. Understandably, K_offset is determined by the network device. Specifically, the network device can determine K_offset in the following manner:

(1) If the terminal device feeds back the TA value determined by itself to the network device, then the network device may determine the K_offset value corresponding to the terminal device according to the TA value fed back by the terminal device. Exemplarily, the network device may set K_offset to a value not smaller than the TA fed back by the terminal device.

(2) If the terminal device does not feed back the TA value determined by itself to the network device, then the network device can determine it according to the RTT value between a certain reference point in its service area and the network device. Exemplarily, the network device may determine the K_offset from the RTT value between the point farthest from the satellite in its service area and the satellite and the public TA value. Exemplarily, the K_offset determined by the network device is equal to the public TA plus the RTT value between the location farthest from the network device in its service area and the network device.

Therefore, generally, the K_offset determined by the network device will be greater than or equal to the TA value determined by the terminal device.

Optionally, after the terminal device accesses the network device and obtains downlink synchronization, the terminal device receives the first configuration information sent by the network device. The first configuration information can be understood as system information (system information). Specifically, the terminal device can acquire system information by monitoring a broadcast control channel (broadcast control channel, BCCH), thereby acquiring K_offset.

Understandably, since the first time domain position is determined according to K_offset, the second time domain position is determined according to the start time domain position of the first uplink transmission resource, and K_offset is greater than or equal to the TA value of the terminal device, so the terminal device sends The actual location of the uplink data may fall within the interval formed from the first time domain location to the second time domain location.

Therefore, in the interval formed from the first time domain position to the second time domain position, the terminal device does not receive the downlink data sent by the network device; correspondingly, in the interval formed from the first time domain position to the second time domain position In the interval of , the network device does not send downlink data for the terminal device, which can avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.

In a possible implementation manner, the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource .

In a possible implementation manner, the first configuration information is also used to indicate a first duration value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell where the terminal device is located or the service beam coverage area ;

The first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource;

The time interval between the first time domain position and the start time domain position of the first uplink transmission resource is equal to the offset; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource The time interval is equal to the difference between the offset and the first duration value.

In a possible implementation manner, the downlink data sent by the network device includes data sent by the network device through a physical downlink control channel PDCCH and/or data sent by the network device through downlink semi-persistent scheduling.

In a second aspect, an embodiment of the present application provides a data transmission method, the method including:

The terminal device receives first configuration information sent by the network device, where the first configuration information is used to indicate an offset;

The terminal device receives downlink control information DCI, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;

The terminal device does not receive data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein the first time domain position is earlier than the second time domain position, The first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.

It can be understood that when the network device configures uplink transmission resources for the terminal device through dynamic scheduling, the terminal device needs to monitor the PDCCH to receive DCI, and determine the start time domain position of the uplink transmission resources through the DCI.

For the terminal device and the network device, the subframe or time slot occupied by the PDCCH is known to both, and the subframe or time slot where the end position of the transmission resource of the DCI sent by the network device to the terminal device is located is used to determine the The first time domain position, K_offset is used to determine the second time domain position, and K_offset is greater than or equal to the TA value of the terminal device, so the actual position where the terminal device sends uplink data can fall between the first time domain position and the second time domain position In the interval composed of two time domain positions.

In the embodiment of the present application, within the interval formed from the first time domain position to the second time domain position, the terminal device does not receive the downlink data sent by the network device; correspondingly, from the first time domain position to the second time domain position In the interval formed by the time domain positions, the network device does not send downlink data for the terminal device, which can avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.

In a possible implementation manner, the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine a start time domain position of the first uplink transmission resource.

In a possible implementation manner, the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is The time sum of the scheduling delay value and the offset.

In a possible implementation manner, the subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the first time domain position and the subframe where the end position of the DCI transmission resource is located The time interval between frames or time slots is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.

In a possible implementation manner, the downlink data sent by the network device includes data sent by the network device through downlink semi-persistent scheduling.

In a third aspect, the embodiment of the present application provides a data transmission method, the method including:

The terminal device receives the second configuration information sent by the network device, the second configuration information is used to indicate the first duration value, and the first duration value is not less than the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located. double;

The terminal device determines not to receive the downlink data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; the subframe or time slot where the end position of the DCI transmission resource is located earlier than the first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI; the second time domain position The interval between the domain position and the first time domain position is the first duration value.

In a fourth aspect, the embodiment of the present application provides a data transmission method, the method including:

The network device sends first configuration information to the terminal device, where the first configuration information is used to indicate an offset;

The network device determines not to send downlink data for the terminal device between the first time domain location and the second time domain location;

Wherein, the first time domain position is earlier than the second time domain position, the first time domain position is determined according to the offset, the second time domain position is determined according to the start time domain position of the first uplink transmission resource, the The first uplink transmission resource is a resource used by the terminal device to send uplink data.

In a possible implementation, the first configuration information is also used to indicate a first duration value, where the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or serving beam coverage area where the terminal device is located;

In a possible implementation manner, the network device does not send downlink data for the terminal device between the first time domain location and the second time domain location, including:

Between the first time domain position and the second time domain position, the network device does not send the data for the terminal device by way of physical downlink control channel PDCCH and/or downlink semi-persistent scheduling.

In the fifth aspect, the embodiment of the present application provides a data transmission method, the method including:

First configuration information sent by the network device to the terminal device, where the first configuration information is used to indicate an offset;

The network device sends downlink control information DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;

The network device does not send downlink data for the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position , the first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.

The network device does not send data for the terminal device in a downlink semi-persistent scheduling manner between the first time domain position and the second time domain position.

In a sixth aspect, the embodiment of the present application provides a data transmission method, the method comprising:

The network device sends second configuration information to the terminal device, where the second configuration information is used to indicate a first duration value, and the first duration value is not less than two times the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located. times;

The network device does not send data to the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; the subframe or time slot where the DCI transmission resource ends is earlier than the The first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI; the second time domain position and The interval between the first time domain positions is the first duration value.

In a seventh aspect, the embodiment of the present application provides a terminal device, including: a processor and a transceiver;

The transceiver is used to receive signals or send signals; the processor is used to execute computer-executable instructions stored in the memory, so that the terminal device executes the first aspect to the third aspect or the first aspect to the third aspect A method in any one of the possible implementations.

In an eighth aspect, the embodiment of the present application provides a network device, including: a processor and a transceiver;

The transceiver is used to receive signals or send signals; the processor is used to execute computer-executable instructions stored in the memory, so that the network device performs the fourth aspect to the sixth aspect or the fourth aspect to the sixth aspect A method in any one of the possible implementations.

In the ninth aspect, the embodiment of the present application provides a data transmission system, the data transmission system includes a terminal device and a network device; the terminal device is used to execute any method as in the first aspect or the first aspect, and the network device For performing any one of the methods of the fourth aspect or the fourth aspect; or, the terminal device is used for performing any one of the methods of the second aspect or the second aspect, and the network device is used for performing the fifth aspect Any one of the methods; or, the terminal device is configured to execute the third aspect or any one of the methods in the third aspect, and the network device is configured to execute the sixth aspect or any one of the methods in the sixth aspect.

In the tenth aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program runs on one or more processors, the The method in any possible implementation manner up to the sixth aspect or from the first aspect to the sixth aspect is executed.

In the eleventh aspect, the embodiment of the present application provides a computer program product, the computer program product includes program instructions, and when the program instructions are executed by a processor, the processor executes the computer program according to the first aspect to the sixth aspect or the first aspect. A method in any possible implementation manner of the aspect to the sixth aspect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the following will briefly introduce the drawings that are required in the embodiments of the present application or the background art.

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a model for calculating the maximum differential delay value provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a location of an uplink pre-configured resource provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of sending uplink data provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a time delay provided by an embodiment of the present application;

FIG. 6 is another schematic diagram of time delay provided by the embodiment of the present application;

FIG. 7 is a schematic flowchart of a data transmission method provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of a time-domain location provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of another time domain location provided by an embodiment of the present application;

FIG. 10 is a schematic flowchart of another data transmission method provided by the embodiment of the present application;

FIG. 11 is a schematic diagram of another time domain location provided by the embodiment of the present application;

Fig. 12 is a schematic diagram of another time domain location provided by the embodiment of the present application;

FIG. 13 is a schematic diagram of another time domain location provided by the embodiment of the present application;

FIG. 14 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a network device provided by an embodiment of the present application;

Fig. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "the", "above", "the" and "this" are intended to also include Plural expressions, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in this application refers to and includes any and all possible combinations of one or more of the listed items. The terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order.

NTN generally refers to a satellite or unmanned aircraft system (unmanned aircraft system, UAS) platform, etc. for wireless frequency transmission network. Compared with traditional terrestrial networks, such as long term evolution (LTE) networks, NTN can use satellites or high-altitude platforms (HAP) for network deployment.

Typical scenarios where NTN is applicable include but are not limited to scenarios where base stations cannot be built, such as continuous coverage in remote mountainous areas, deserts, oceans, and forests; or scenarios where base stations are damaged, such as emergency communications when disasters occur or base stations are damaged.

In order to describe the solution provided by this application more clearly, the terms involved in this application are introduced in detail below.

1. Network Architecture

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.

As shown in FIG. 1 , the communication system includes a satellite, a terminal device, and a gateway (gateway, which may also be called a ground station). The wireless link between the satellite and the terminal equipment can be called the service link, the wireless link between the satellite and the gateway station can be called the feedback link, and there can be an inter-satellite link between the satellite and the satellite to provide data backhaul road.

Generally, one or several gateway stations of the communication system need to be connected to a public data network (public data network, PDN), such as the network in FIG. 1 .

Exemplarily, the terminal device may also be called user equipment (user equipment, UE), terminal, access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, User Agent or User Device. The terminal device may be a mobile station (mobile station, MS), a subscriber unit (subscriber unit), a drone, an Internet of Things (internet of things, IoT) device, a station in a wireless local area network (wireless local area network, WLAN), ST), cellular phone (cellular phone), smart phone (smartphone), cordless phone, wireless data card, tablet computer, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station , personal digital assistant (PDA) equipment, laptop computer (laptop computer), machine type communication (machine type communication, MTC) terminal, handheld device with wireless communication function, computing device or connected to a wireless modem Other processing devices, vehicle-mounted devices, and wearable devices (also referred to as wearable smart devices). The terminal device may also be a terminal device in a next-generation communication system, for example, a terminal device in a 5G system or a terminal device in a future evolved public land mobile network (PLMN), a new radio (new radio, NR ) Terminal equipment in the system, etc. In non-terrestrial networks, a cell may consist of one or more beams. As shown in Figure 1, a cell includes multiple beams.

In some embodiments, the base station in the communication system may be located on land, for example, the gateway station in FIG. 1 may have the function of a base station. At this time, the satellite will act as a relay between the terminal device and the gateway station, receive the data sent by the terminal device through the service link, and then forward the data to the gateway station on the ground.

In some other embodiments, the base station in the communication system may also be set up on a satellite, for example, the satellite in FIG. 1 may have the function of a base station. At this time, the satellite with the base station function can be considered as one of the evolved base station (evolutional NodeB, eNB) or 5G base station (gNB).

In the embodiment of the present application, the terminal device can communicate with the network device, and the network device can be understood as a device capable of data processing and network communication. Exemplarily, the network device may include a base station (for example, eNB, gNB, etc.) or a network access device, etc., which is not limited in this application. For ease of description, the method involved in the present application will be described exemplarily below by taking the network device as a satellite with a base station function as an example.

2. The maximum differential delay value

In non-terrestrial networks, different locations within the cell or beam coverage and network equipment have different propagation delays.

Exemplarily, in this embodiment of the application, the maximum differential delay value can be understood as the propagation delay corresponding to the position furthest from the network device and the propagation time corresponding to the position closest to the network device within the coverage area of a certain cell or a certain beam. delay difference.

Exemplarily, if the maximum differential delay value is calculated for the coverage of a certain cell, the maximum differential delay value is the maximum differential delay value at the cell level. It can be understood that the maximum differential delay values corresponding to different cells may be the same or different.

Exemplarily, if the maximum differential delay value is calculated for the coverage of a certain beam, the maximum differential delay value is the maximum differential delay value at the beam level. It can be understood that the maximum differential delay values corresponding to different beam coverage ranges may be the same or different.

Specifically, FIG. 2 is a schematic diagram of a model for calculating a maximum differential delay value provided by an embodiment of the present application, and the schematic diagram shown in FIG. 2 takes a coverage area of a beam as an example. As shown in Figure 2, d1 is the shortest distance between the network device and the beam coverage area, and d2 is the furthest distance between the network device and the beam coverage area. It can be understood that the network device can calculate the maximum differential delay value corresponding to a cell or beam coverage area through the Pythagorean theorem.

In the NTN network, because the network equipment is relatively far from the ground, and the coverage area of the cell or beam formed by the network equipment is relatively large, there is a large differential delay in a certain cell or a certain beam coverage area. For example, twice the maximum differential delay value of a synchronous network device is 20.6 milliseconds.

3. Scheduling

Exemplarily, the scheduling involved in this application may include dynamic scheduling and downlink semi-persistent scheduling (semi-persistent scheduling, SPS).

In this embodiment of the present application, dynamic scheduling can be understood as a network device making a scheduling decision in each transport time interval (transport time interval, TTI), and notifying all scheduled terminal devices of the scheduling information through control signaling.

In this embodiment of the present application, downlink semi-persistent scheduling may also be called semi-persistent scheduling or semi-persistent scheduling. Different from allocating wireless resources to a terminal device once per TTI in dynamic scheduling, SPS allows semi-persistent configuration of wireless resources and periodically allocates the resource to a specific terminal device.

Specifically, the network device uses the physical downlink control channel (physical downlink control channel, PDCCH) scrambled by the cell-radio network temporary identifier (C-RNTI) in a certain TTI to specify the channel used by a certain terminal device. Radio resources (herein referred to as SPS resources), that is to say, the network device notifies the terminal device when to start semi-persistent scheduling through the PDCCH. Every time a cycle (which can be understood as a cycle of semi-persistent scheduling), the terminal device can use the SPS resource to receive or send data. The network device does not need to issue a PDCCH in the subframe or time slot (herein referred to as an SPS subframe) to specify allocated resources, thereby saving the transmission overhead of the control signaling PDCCH.

4. Pre-configured resource transmission

In the NTN network, the pre-configured resource transmission mode may include an uplink pre-configured resource transmission mode and a downlink pre-configured resource transmission mode.

Exemplarily, the preconfigured resource transmission manner involved in the embodiment of the present application includes an uplink preconfigured resource transmission manner.

In the embodiment of the present application, the uplink pre-configured resource transmission may be called configured grant uplink transmission, including type 1 configuration grant (configured grant type 1) and type 2 configuration grant (configured grant type 2).

For configured grant type 1, when the terminal device receives the high-level configuration of configured grant type 1, the terminal device can determine the location of the uplink pre-configured resource according to the high-level configuration of the configured grant type 1, and use the uplink pre-configured resource to send upstream data.

Exemplarily, FIG. 3 is a schematic diagram of a position of an uplink pre-configured resource provided by an embodiment of the present application. As shown in Figure 3, uplink pre-configured resources are periodic.

For configured grant type 2, after the terminal device receives the high-level configuration of configured grant type 2, the terminal device also needs to receive the downlink control information (DCI) sent by the network device, and determine the high-level configuration based on the downlink control information. Whether resources of configured grant type 2 are available.

5. Offset K_offset and TA value

In order to ensure the uplink time synchronization between the terminal equipment and the network equipment, the TA value is introduced. In the NTN network, when the terminal device sends uplink data, it will send it in advance according to the TA value.

Exemplarily, FIG. 4 is a schematic diagram of sending uplink data provided by an embodiment of the present application. As shown in Figure 4, the network configures periodic uplink transmission resources (which can be understood as configure grant type 1 or configure grant type 2) for terminal devices through high-level signaling. When terminal devices use the uplink transmission resources to send uplink data, It needs to be sent in advance (the advance amount is the TA value determined by the terminal device). That is to say, the time domain position where the terminal device actually sends the uplink data is TA time units ahead of the time domain position of the uplink transmission resources configured by the network.

In the NTN network, the distance between the network device and the terminal device is generally hundreds or even thousands of kilometers, so the transmission delay between the network device and the terminal device increases significantly, resulting in a large TA in the NTN network. .

For example, please refer to FIG. 5 . FIG. 5 is a schematic diagram of time delay provided by an embodiment of the present application. As shown in FIG. 5 , for a network device, a downlink subframe is aligned with an uplink subframe. The transmission delay between the network device and the terminal equipment (UE) is delay A. The TA value can be understood as the difference between the start time domain position of the terminal device receiving the downlink subframe and the start time domain position of transmitting the uplink subframe.

It is precisely because the TA in the NTN network is very large, in order to ensure that the terminal device has enough time to send uplink data in advance, the offset value K_offset is introduced.

Exemplarily, FIG. 6 is another schematic diagram of time delay provided by the embodiment of the present application, and the scheduling time delay of PDCCH scheduling PUSCH is enhanced to K2+K_offset. That is to say, in the process of scheduling the PUSCH by the PDCCH, the downlink control information in the PDCCH will indicate the scheduling delay value K2 and the offset value K_offset to the terminal equipment. Then, the terminal device jointly determines the transmission resource position of the PUSCH according to the indicated K2 value and the offset value K_offset. In this way, it can be ensured that there must be a sufficiently large time interval between the time of receiving the PDCCH and the time of sending the PUSCH for the terminal equipment to perform early transmission.

In the NTN network, the TA value of each terminal device needs to be jointly determined according to the common TA (common TA) and the TA of the terminal device level. Exemplarily, the TA value of a terminal device is equal to the public TA plus the TA of the terminal device level.

Exemplarily, the public TA can be understood as the TA value determined by the distance between the network device and a certain reference point, and the position of the reference point can be a network device, a gateway station, or a service link or a feedback link anywhere on the road. In some embodiments, the public TA can be understood as the round trip time (RTT) between the reference point and the network device.

Exemplarily, the TA at the terminal device level may be interpreted as a TA value calculated autonomously by the terminal device according to its own location information and ephemeris information. The so-called terminal device-level TA means that different terminal devices calculate their respective TA values. Since different terminal devices are located at different distances from network devices, the TA values calculated by different terminal devices are different. In some embodiments, the TA at the terminal device level may be the round-trip propagation delay between the terminal device and the network device.

It can be understood that it is precisely because the terminal device sends uplink data to the network device in advance according to the TA value, and the TA value of each terminal device is calculated by itself, so the network device cannot know the actual uplink data sent by the terminal device. time domain location.

For half-duplex and frequency division duplex (frequency division duplex, FDD) terminal equipment, the terminal equipment cannot receive and transmit data at the same time. The uplink data sent by the terminal device may collide with the downlink data sent by the network device in time, thereby reducing the reliability of data transmission.

In some embodiments, the terminal device can indicate the TA value determined by itself by transmitting signaling to the network device, so that the network device can avoid the moment when the terminal device sends uplink data, thereby avoiding collisions between uplink data and downlink data. However, each time the terminal device updates the TA value, it sends a signaling to the network device to inform the network device of the new TA value, and the signaling overhead is large.

In view of the above problems, the embodiment of the present application provides a data transmission method, which determines a time interval according to the offset and the start time domain position of the uplink transmission resource. In this time interval, the terminal device does not receive the downlink data sent by the network device, and at the same time , the network device does not send downlink data to the terminal device, thereby avoiding time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby avoiding resource collision and improving the reliability of data transmission. For ease of understanding, the data transmission method provided by this application will be explained next by combining the network device and the terminal device.

Firstly, a data transmission method under the condition that a network device configures periodic uplink transmission resources for a terminal device is introduced. Please refer to FIG. 7. FIG. 7 is a schematic flowchart of a data transmission method provided in an embodiment of the present application, wherein the method includes:

701: The network device sends first configuration information to the terminal device, where the first configuration information is used to indicate an offset. Correspondingly, the terminal device receives the first configuration information sent by the network device.

In the embodiment of this application, the offset can be understood as the offset K_offset of the fifth part in the terminology. Generally, the unit of K_offset can be subframe or time slot. For the convenience of description, the method provided by this application will be explained next by taking K_offset as an example.

Understandably, K_offset is determined by the network device. Specifically, the network device can determine K_offset in the following manner:

(1) If the terminal device feeds back the TA value determined by itself to the network device, then the network device can determine the K_offset value corresponding to the terminal device according to the TA value fed back by the terminal device. Exemplarily, the network device may set K_offset to a value not smaller than the TA fed back by the terminal device.

(2) If the terminal device does not feed back the TA value determined by itself to the network device, then the network device can determine it according to the RTT value between a certain reference point in its service area and the network device. Exemplarily, the network device may determine the K_offset from the RTT value and the public TA value between the location farthest from the network device in its service area and the network device. Exemplarily, the K_offset determined by the network device is equal to the public TA plus the RTT value between the location farthest from the network device in its service area and the network device.

When step 701 is specifically implemented, the terminal device may receive the first configuration information sent by the network device after accessing the network device and obtaining downlink synchronization. The first configuration information may be exemplary system information (system information). Specifically, the terminal device may obtain the system information by monitoring a broadcast control channel (broadcast control channel, BCCH), thereby obtaining K_offset.

702: The network device determines not to send downlink data for the terminal device between the first time domain position and the second time domain position. Correspondingly, the terminal device determines not to receive the downlink data sent by the network device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position, and the first time domain position The domain position is determined according to the offset, and the second time domain position is determined according to the start time domain position of the first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data.

Understandably, before the terminal device sends uplink data to the network device, it must determine the time domain position of the uplink transmission resources configured by the network device. In the embodiment of the present application, the first uplink transmission resource may be understood as an uplink transmission resource configured by the network device for the terminal device.

It can be understood that since the first time domain position is determined according to K_offset, the second time domain position is determined according to the start time domain position of the first uplink transmission resource, and K_offset is greater than or equal to the TA value determined by the terminal device, so the terminal device The actual location for sending the uplink data may fall within the interval formed from the first time domain location to the second time domain location.

Next, the downlink data not received by the terminal device and the downlink data not sent by the network device are explained.

It can be understood that the manner of the network device sending the downlink data involved in the embodiment of the present application includes: the network device sends the downlink data to the terminal device by means of dynamic scheduling and downlink semi-persistent scheduling.

(1) For the dynamic scheduling mode, for example, the network device can dynamically schedule a physical downlink shared channel (physical downlink shared channel, PDSCH) through DCI to deliver data. It can be understood that, when the network device delivers data through dynamic scheduling, it can be guaranteed not to fall within the interval formed from the first time domain position to the second time domain position.

(2) For the semi-persistent scheduling mode, for example, the network device may use downlink transmission resources to periodically send downlink data to the terminal device. It can be understood that, among the periodic downlink transmission resources, one or more downlink transmission resources fall within the interval formed from the first time domain position to the second time domain position. On the downlink transmission resources falling within the interval formed by the first time domain position to the second time domain position, the network device does not send downlink data.

In addition, the terminal device monitors the PDCCH to receive the DCI is also implemented in a periodic manner. Periodically, there will be one or more PDCCH monitoring opportunities in the first time domain position to the second time domain position. within the composed interval. At a PDCCH monitoring opportunity falling within the interval formed from the first time domain position to the second time domain position, the terminal device does not monitor the PDCCH.

In this embodiment, the terminal device does not receive the downlink data sent by the network device. It may be understood that the terminal device does not receive the data sent by the network device through downlink semi-persistent scheduling and the downlink control information sent through the PDCCH.

Correspondingly, the fact that the network device does not send downlink data for the terminal device may be understood as that the network device does not send data for the terminal device through PDCCH and/or downlink semi-persistent scheduling.

In some embodiments, the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource.

For example, please refer to FIG. 8 . FIG. 8 is a schematic diagram of a time-domain location provided by an embodiment of the present application. Each shaded rectangle in FIG. 8 can be understood as the above-mentioned first uplink transmission resource. As shown in FIG. 8, the first uplink transmission resource is periodic and may be called an uplink preconfigured resource (UL configure grant). That is to say, the terminal device can use the uplink pre-configured resource to periodically send uplink data to the network device.

Three UL configure grants are shown in Figure 8. For ease of understanding, the method provided in the embodiment of the present application will be described below by taking the first UL configure grant as an example, and the first UL configure grant will be referred to as the first UL configure grant later.

The terminal device determines K_offset and the start time domain position of the first UL configure grant. Exemplarily, the terminal device may determine the K_offset and the start time domain position of the first UL configure grant by receiving the system information sent by the network device.

In this embodiment, the start time domain position of the first UL configure grant, that is, the time domain position n in FIG. 8 , can be understood as the above-mentioned second time domain position. The time domain position corresponding to K_offset time units before the start time domain position of the first UL configure grant, that is, the time domain position n-K_offset in FIG. 8 , can be understood as the first time domain position above.

The terminal device does not receive the data sent by the network device through downlink semi-persistent scheduling and the downlink control information sent through the PDCCH in the interval formed by the time domain position n-K_offset to n; correspondingly, the network device in the time domain position n- In the interval composed of K_offset to n, the data for the terminal device is not sent through PDCCH and/or downlink semi-persistent scheduling.

It can be understood that K_offset is a parameter configured on the network device side. Generally, K_offset is greater than or equal to the TA value determined by the terminal equipment. That is to say, the time when the terminal device sends the uplink data in advance according to the TA value must fall between the time domain positions n-K_offset to n.

Therefore, in the interval composed of time domain positions n-K_offset to n, the network device does not send downlink data for the terminal device, and the terminal device does not receive the downlink data sent by the network device, which can avoid the time when the terminal device sends data and The time when the network device sends data is the same, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.

In some other embodiments, the first configuration information is also used to indicate a first duration value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell where the terminal device is located or the coverage area of the serving beam;

The first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource; the time interval between the first time domain position and the start time domain position of the first uplink transmission resource equal to the offset; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource is equal to the difference between the offset and the first duration value.

It can be understood that although the network device does not know the TA value determined by the terminal device through autonomous calculation, nor does it know the specific time domain position where the terminal device sends uplink data, the network device can determine the TA value of the terminal device according to the first duration value. The value range of the TA value.

In this embodiment, the first duration value can be understood as a value determined by the maximum differential delay value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located. The maximum differential delay value can be understood as the difference between the RTT corresponding to the farthest point from the satellite and the RTT corresponding to the closest point to the satellite within a cell or a beam coverage area. For a specific explanation of the maximum differential delay value, please refer to Part 2 of the previous terminology part, and details will not be repeated here.

Exemplarily, after the network device determines the first duration value, it may indicate the size of the first duration value to the terminal device through the first configuration information. It should be noted that the first duration value and K_offset may also be indicated separately, which is not limited in this application.

Exemplarily, FIG. 9 is a schematic diagram of another time domain location provided by the embodiment of the present application. It can be understood that the maximum TA value determined by the terminal device through autonomous calculation can be K_offset, that is, the terminal device can send uplink data at the time domain position n-K_offset at the earliest. The minimum TA value determined by the terminal device through autonomous calculation may be K_offset-T, where T may be understood as the first duration value, that is, the terminal device may send uplink data at the time domain position n-K_offset+T at the latest. Therefore, the actual start position of the terminal device to send the uplink data will fall within the interval formed from n-K_offset to n-K_offset+T.

In this embodiment, the time-domain position n-K_offset may be understood as the above-mentioned first time-domain position, and the time-domain position n-K_offset+T may be understood as the above-mentioned second time-domain position. It can be understood that, as shown in FIG. 9 , the time interval between the first time domain position and the start time domain position of the first uplink transmission resource (that is, n in FIG. 9 ) is K_offset. The time interval between the second time domain position and the start time domain position of the first uplink transmission resource is equal to K_offset-T.

In this embodiment, within the interval consisting of time domain positions n-K_offset to n-K_offset+T, the terminal device does not receive the data sent by the network device through downlink semi-persistent scheduling and the downlink control information sent through the PDCCH; correspondingly Specifically, the network device does not send data for the terminal device through PDCCH and/or downlink semi-persistent scheduling, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission sex. At the same time, compared with the previous embodiment, the time domain positions in this embodiment consist of a smaller interval, that is to say, the network device can send downlink data on more resources, which can improve resource utilization.

The above data transmission method is applicable to the case where the network device configures periodic uplink transmission resources for the terminal device. Next, the data transmission method for the case where the network device configures uplink transmission resources for the terminal device through dynamic scheduling is introduced.

Fig. 10 is a schematic flowchart of another data transmission method provided by the embodiment of the present application, wherein the method includes:

1001: The network device sends first configuration information to the terminal device, where the first configuration information is used to indicate an offset. Correspondingly, the terminal device receives the first configuration information sent by the network device.

For details, please refer to the description of step 701, which will not be repeated here.

1002: The network device sends DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data. Correspondingly, the terminal device receives the DCI.

In some embodiments, the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine the start time domain position of the first uplink transmission resource.

Exemplarily, after receiving the uplink grant information in the DCI sent by the network device, the terminal device will determine the start time domain position of the uplink transmission resource according to the scheduling delay value and K_offset indicated by the uplink grant information. Generally, the time interval between the time when the terminal device sends uplink data and the subframe or time slot where the end position of the DCI transmission resource is located is the time sum of the scheduling delay value and K_offset.

For ease of description, the scheduling delay value k will be used for description later.

1003: The network device determines not to send data for the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; correspondingly, the terminal device The downlink data sent by the network device is not received between domain positions; wherein, the first time domain position is earlier than the second time domain position, and the first time domain position is based on the subframe where the end position of the DCI transmission resource is located Or the time slot is determined; the second time domain position is determined according to the offset.

It can be understood that, for the terminal device and the network device, the subframe or time slot occupied by the PDCCH is known to both, and the subframe or time slot where the end position of the transmission resource of the DCI sent by the network device to the terminal device is located The slot is used to determine the first time domain position, K_offset is used to determine the second time domain position, and K_offset is greater than or equal to the TA value of the terminal device, so the actual position where the terminal device sends uplink data can fall within the first time domain The domain position to the interval formed by the second time domain position.

In this embodiment, the downlink data sent by the network device includes data sent by the network device through downlink semi-persistent scheduling; The device sends data.

In still some embodiments, the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is the The time sum of the scheduling delay value and the offset.

For example, please refer to FIG. 11 . FIG. 11 is a schematic diagram of another time-domain location provided by an embodiment of the present application.

As shown in Figure 11, the terminal device receives the DCI sent by the network device, the subframe or time slot where the end position of the transmission resource of the DCI is located is n1, and the start time domain of the uplink transmission resource can be determined according to k and K_offset indicated by the DCI position, that is, the starting position of PUSCH in Figure 11 .

As shown in FIG. 11 , the time interval between the subframe or time slot where the end position of the DCI transmission resource received by the terminal device is located and the start time domain position of the PUSCH is k+K_offset.

In this embodiment, the terminal device determines the time domain position n1, which can be understood as the first time domain position; the time domain position corresponding to k+K_offset time units after the time domain position n1, that is, FIG. 11 The n1+k+K_offset position in can be understood as the second time domain position.

In the interval composed of n1 to n1+k+K_offset, the terminal device does not receive downlink data sent by the network device; correspondingly, the network device does not send downlink data for the terminal device.

It can be understood that the time domain position at which the terminal device sends the uplink data in advance according to the TA value independently calculated must fall between the time domain positions n1 to n1+k+K_offset. Therefore, within the interval composed of n1 to n1+k+K_offset, the network device does not send downlink data for the terminal device, and the terminal device does not receive the downlink data sent by the network device, which can avoid the uplink data sent by the terminal device from colliding with the network device. The downlink data sent collides in time, thereby improving the reliability of data transmission.

Optionally, the second time domain position may be adjusted forward by 1 or 2 time units. Exemplarily, n1+k+K_offset-1 may be used as the second time domain position, that is, within the interval formed from n1 to n1+k+K_offset-1, the network device does not send downlink data for the terminal device, and the terminal The device also does not receive downlink data sent by the network device.

In some other embodiments, the subframe or time slot where the end position of the transmission resource of the DCI is located is earlier than the first time domain position; the first time domain position and the subframe where the end position of the transmission resource of the DCI is located Or the time interval between time slots is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.

For example, please refer to FIG. 12 . FIG. 12 is a schematic diagram of another time domain location provided by an embodiment of the present application.

In this embodiment, the terminal device determines the subframe or time slot where the end position of the DCI transmission resource is located, that is, the position in the domain n1, and then determines the position in the time domain n1+k according to k. The time domain position n1+k can be understood as is the first time domain position.

Further, the terminal device can determine the time domain position n1+k+K_offset according to k and K_offset, and the moment of the time domain position n1+k+K_offset can be understood as the second time domain position. It can be understood that the time interval between the first time domain position and time domain position n1 is equal to k, and the time interval between the time domain position n1+k+K_offset and the first time domain position is equal to K_offset.

It can be understood that K_offset is a parameter configured on the network device side. Generally, the offset K_offset is greater than or equal to the TA value determined by the terminal device. That is to say, the time when the terminal device sends uplink data in advance according to the TA value must fall between n1+k and n1+k+K_offset.

Optionally, the second time domain position may be adjusted forward by 1 or 2 time units. Exemplarily, the time domain position n1+k+K_offset-1 can be understood as the second time domain position, and within the interval composed of n1+k to n1+k+K_offset-1, the network device does not send For downlink data, the terminal device does not receive the downlink data sent by the network device, which can avoid the time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission.

In some other embodiments, the terminal device receives the second configuration information sent by the network device, the second configuration information is used to indicate the first duration value, and the first duration value is not less than the corresponding time period of the serving cell where the terminal device is located or the service beam coverage area. Twice the maximum differential delay of

The terminal device receives DCI, where the DCI is used to schedule a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data;

The terminal device does not receive downlink data sent by the network device between the first time domain position and the second time domain position; the subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the The time interval between the first time domain position and the subframe or time slot where the end position of the DCI transmission resource is located is the scheduling delay value; the time interval between the second time domain position and the first time domain position The interval is the first duration value.

It can be understood that although the network device does not know the TA value determined by the terminal device through autonomous calculation, nor does it know the specific time domain position where the terminal device sends uplink data, the network device can determine the TA value based on the first duration value. range of values.

In this embodiment, the first duration value can be understood as a maximum differential delay value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located. The maximum differential delay value can be understood as the difference between the RTT corresponding to the farthest point from the satellite and the RTT corresponding to the closest point to the satellite within a cell or a beam coverage area. For specific explanations, please refer to Part 2 of the terminology section above, and will not repeat them here.

Exemplarily, after the network device determines the value of the first duration, it may indicate the size of the first duration to the terminal device through the second configuration information.

Exemplarily, FIG. 13 is a schematic diagram of another time-domain position provided by the embodiment of the present application. The maximum TA value determined by the terminal device through independent calculation can be K_offset, that is, the terminal device can be at the time-domain position n1+k at the earliest. Send uplink data. The terminal device independently calculates and determines that the minimum TA value may be K_offset-T, where T can be understood as the first duration value, that is, the terminal device can send uplink data at the time domain position n1+k+T at the latest. Therefore, the actual time domain position where the terminal device sends uplink data is within the interval formed by time domain positions n1+k to n1+k+T.

In this embodiment, as shown in FIG. 13 , the time domain position n1+k may be understood as the first time domain position, and the time domain position n1+k+T may be understood as the above-mentioned second time domain position. It can be understood that, the time interval between the first time domain position and the time domain position n1 is k; the time interval between the second time domain position and the first time domain position is the T.

Optionally, the second time domain position may be adjusted forward by 1 or 2 time units. Exemplarily, the time domain position n1+k+T-1 can be understood as the second time domain position, and within the interval consisting of time domain positions n1+k to n1+k+T-1, the network device does not send For the downlink data of the terminal device, the terminal device does not receive the downlink data sent by the network device, so as to avoid time collision between the uplink data sent by the terminal device and the downlink data sent by the network device, thereby improving the reliability of data transmission. At the same time, compared with the previous embodiment, the time domain positions in this embodiment consist of a smaller interval, that is to say, the network device can send downlink data on more resources, which can improve resource utilization.

The method in the embodiment of the present application has been described in detail above, and the device provided in the embodiment of the present application will be described below.

Please refer to FIG. 14 . FIG. 14 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. As shown in FIG. 14, the above-mentioned terminal device 140 includes a receiving unit 1401 and a determining unit 1402, and the description of each unit is as follows:

In the first implementation:

A receiving unit 1401, configured to receive first configuration information sent by a network device, where the first configuration information is used to indicate an offset;

A determining unit 1402, configured to determine not to receive downlink data sent by the network device between a first time domain location and a second time domain location; wherein, the first time domain location is earlier than the second time domain location, and the second time domain location A time domain position is determined according to the offset, and the second time domain position is determined according to a start time domain position of a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data.

Optionally, the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the start time domain position of the first uplink transmission resource.

Optionally, the first configuration information is also used to indicate a first duration value, and the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or service beam coverage area where the terminal device is located; the first duration The domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource; the time interval between the first time domain position and the start time domain position of the first uplink transmission resource is equal to the offset amount; the time interval between the second time domain position and the start time domain position of the first uplink transmission resource is equal to the difference between the offset and the first duration value.

Optionally, the downlink data sent by the network device includes data sent by the network device through a physical downlink control channel PDCCH and/or data sent by the network device through downlink semi-persistent scheduling.

In the second implementation:

The receiving unit 1401 is further configured to receive downlink control information DCI, where the DCI is used to determine a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data;

A determining unit 1402, configured to determine not to receive data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the The second time domain position, the first time domain position is determined according to the subframe or the time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.

Optionally, the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine a start time domain position of the first uplink transmission resource.

Optionally, the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the time interval between the second time domain position and the first time domain position is the scheduling delay The time sum of the value and the offset.

Optionally, the subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the first time domain position and the subframe or time slot where the end position of the DCI transmission resource is located The time interval between is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.

In a third implementation:

The receiving unit 1401 is configured to receive the second configuration information sent by the network device, the second configuration information is used to indicate the first duration value, and the first duration value is not less than the maximum corresponding to the serving cell or service beam coverage area where the terminal device is located. Twice the differential delay;

The receiving unit 1401 is further configured to receive downlink control information DCI, where the DCI is used to schedule first uplink transmission resources, where the first uplink transmission resources are resources used by the terminal device to send uplink data;

A determining unit 1402, configured to determine not to receive downlink data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; where the end position of the DCI transmission resource is located The subframe or time slot is earlier than the first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI ; The interval between the second time domain position and the first time domain position is the first time length value.

Please refer to FIG. 15 . FIG. 15 is a schematic structural diagram of a network device provided by an embodiment of the present application. As shown in Figure 15, the above-mentioned network device 150 includes a sending unit 1501 and a determining unit 1502, and the description of each unit is as follows:

In the first implementation:

A sending unit 1501, configured to send first configuration information to the terminal device, where the first configuration information is used to indicate an offset;

A determining unit 1502, configured to determine not to send downlink data for the terminal device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position, The first time domain position is determined according to the offset, and the second time domain position is determined according to a start time domain position of a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data.

Optionally, the first configuration information is also used to indicate a first duration value, where the first duration value is not less than twice the maximum differential delay corresponding to the serving cell or serving beam coverage area where the terminal device is located;

Optionally, the sending unit 1501 is specifically configured to not send the data for the terminal device through PDCCH and/or downlink semi-persistent scheduling between the first time domain position and the second time domain position.

In the second implementation:

The sending unit 1501 is further configured to send downlink control information DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;

A determining unit 1502, configured to determine not to send downlink data for the terminal device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position, The first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.

Optionally, the subframe or time slot where the end position of the transmission resource of the DCI is located is earlier than the first time domain position; the first time domain position and the subframe where the end position of the transmission resource of the DCI is located or The time interval between time slots is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset.

Optionally, the sending unit 1501 is specifically configured to not send the data for the terminal device between the first time domain position and the second time domain position without using downlink semi-persistent scheduling.

In a third implementation:

The sending unit 1501 is configured to send second configuration information to the terminal device, where the second configuration information is used to indicate a first duration value, and the first duration is not less than the maximum difference hour corresponding to the serving cell or service beam coverage area where the terminal device is located. twice as long

The sending unit 1501 is further configured to send downlink control information DCI to the terminal device, where the DCI is used by the terminal device to determine a first uplink transmission resource, where the first uplink transmission resource is a resource used by the terminal device to send uplink data;

A determining unit 1502, configured to determine not to send downlink data for the terminal device between the first time domain position and the second time domain position; the subframe or time slot where the end position of the DCI transmission resource is located earlier than the first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI; the second time domain position The interval between the domain position and the first time domain position is the first duration value.

Please refer to FIG. 16 . FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 160 shown in FIG. 16 may be the above-mentioned terminal device 140 or the above-mentioned network device 150 .

As shown in Figure 16. The communication device 160 includes at least one processor 1602, configured to implement the functions of the terminal device in the method provided by the embodiment of the present application; or, configured to implement the function of the network device in the method provided in the embodiment of the present application. The communication device 160 may also include a transceiver 1601 . The transceiver 1601 is used to communicate with other devices/devices via transmission media. The processor 1602 uses the transceiver 1601 to send and receive data and/or signaling, and is used to implement the methods in the foregoing method embodiments.

Optionally, the communication device 160 may further include at least one memory 1603 for storing program instructions and/or data. The memory 1603 is coupled to the processor 1602 . The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. Processor 1602 may cooperate with memory 1603 . Processor 1602 may execute program instructions stored in memory 1603 . At least one of the at least one memory may be included in the processor.

The embodiment of the present application does not limit the specific connection medium among the transceiver 1601, the processor 1602, and the memory 1603. In the embodiment of the present application, in FIG. 16, the memory 1603, the processor 1602, and the transceiver 1601 are connected through a bus 1604. The bus is represented by a thick line in FIG. 16, and the connection between other components is only for schematic illustration. , is not limited. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 16 , but it does not mean that there is only one bus or one type of bus.

In this embodiment of the application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

It can be understood that when the communication device 160 is the above-mentioned terminal device 140 , the actions performed by the receiving unit 1401 may be performed by the transceiver 1601 , and the actions performed by the determining unit 1402 may be performed by the processor 1602 . Alternatively, when the communication device 160 is the above-mentioned network device 150 , the actions performed by the sending unit 1501 may be performed by the transceiver 1601 , and the actions performed by the determining unit 1502 may be performed by the processor 1602 .

The present application also provides a computer-readable storage medium, where computer codes are stored in the computer-readable storage medium, and when the computer codes are run on the computer, the computer is made to execute the methods of the above-mentioned embodiments.

The present application also provides a computer program product, the computer program product includes computer code or computer program, and when the computer code or computer program is run on a computer, the methods in the above embodiments are executed.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the above claims.

Claims

A data transmission method, characterized in that the method comprises:

The terminal device receives first configuration information sent by the network device, where the first configuration information is used to indicate an offset;

The terminal device determines not to receive the downlink data sent by the network device between the first time domain position and the second time domain position;

Wherein, the first time domain position is earlier than the second time domain position, the first time domain position is determined according to the offset, and the second time domain position is determined according to the start time of the first uplink transmission resource The domain position is determined, and the first uplink transmission resource is a resource used by the terminal device to send uplink data.
The method according to claim 1, wherein the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the The start time domain position of the first uplink transmission resource.
The method according to claim 1, wherein the first configuration information is further used to indicate a first duration value, and the first duration value is not less than the corresponding time interval of the serving cell or service beam coverage area where the terminal device is located. Twice the maximum differential delay;

The first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource;

The time interval between the first time domain position and the start time domain position of the first uplink transmission resource is equal to the offset; the second time domain position and the start time of the first uplink transmission resource The time interval between domain positions is equal to the difference between the offset and the first duration value.
The method according to any one of claims 1-3, wherein the downlink data sent by the network device includes the data sent by the network device through the Physical Downlink Control Channel (PDCCH) and/or the data sent by the network device through the downlink half Data sent in a continuous scheduling manner.
A data transmission method, characterized in that the method comprises:

The terminal device receives first configuration information sent by the network device, where the first configuration information is used to indicate an offset;

The terminal device receives downlink control information DCI, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;

The terminal device determines not to receive the data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position Two time domain positions, the first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.
The method according to claim 5, wherein the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine the start time domain of the first uplink transmission resource Location.
The method according to claim 6, wherein the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is the same as the first time domain position The time interval between the time domain positions is the time sum of the scheduling delay value and the offset.
The method according to claim 6, wherein the subframe or time slot where the end position of the transmission resource of the DCI is located is earlier than the first time domain position; the first time domain position is the same as the DCI The time interval between the subframes or time slots where the end position of the transmission resource is located is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset displacement.
A data transmission method, characterized in that the method comprises:

The terminal device receives the second configuration information sent by the network device, the second configuration information is used to indicate the first duration value, and the first duration value is not less than the maximum difference corresponding to the serving cell or service beam coverage area where the terminal device is located twice the delay;

The terminal device receives downlink control information DCI, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;

The terminal device determines not to receive the downlink data sent by the network device through downlink semi-persistent scheduling between the first time domain position and the second time domain position;

The subframe or time slot where the end position of the DCI transmission resource is located is earlier than the first time domain position; the first time domain position and the subframe or time slot where the end position of the DCI transmission resource is located The time interval between them is the scheduling delay value indicated by the DCI; the interval between the second time domain position and the first time domain position is the first time length value.
A data transmission method, characterized in that the method comprises:

The network device sends first configuration information to the terminal device, where the first configuration information is used to indicate an offset;

The network device determines not to send downlink data for the terminal device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position, and the The first time domain position is determined according to the offset, the second time domain position is determined according to the start time domain position of the first uplink transmission resource, and the first uplink transmission resource is used by the terminal device to send uplink data resource.
The method according to claim 10, wherein the time interval between the first time domain position and the second time domain position is the offset; the second time domain position is the The start time domain position of the first uplink transmission resource.
The method according to claim 10, wherein the first configuration information is further used to indicate a first duration value, and the first duration value is not less than the service cell or service beam coverage area corresponding to the terminal device. Twice the maximum differential delay;

The first time domain position and the second time domain position are earlier than the start time domain position of the first uplink transmission resource;

The time interval between the first time domain position and the start time domain position of the first uplink transmission resource is equal to the offset; the second time domain position and the start time of the first uplink transmission resource The time interval between domain positions is equal to the difference between the offset and the first duration value.
The method according to any one of claims 10-12, wherein the network device determines not to send downlink data for the terminal device between the first time domain position and the second time domain position, comprising:

The network device determines that between the first time domain position and the second time domain position, the data for the terminal device is not sent through a physical downlink control channel PDCCH and/or downlink semi-persistent scheduling.
A data transmission method, characterized in that the method comprises:

First configuration information sent by the network device to the terminal device, where the first configuration information is used to indicate an offset;

The network device sends downlink control information DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;

The network device determines not to send the data for the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position Two time domain positions, the first time domain position is determined according to the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is determined according to the offset.
The method according to claim 14, wherein the DCI is used to indicate a scheduling delay value, and the scheduling delay value and the offset are used to determine the start time domain of the first uplink transmission resource Location.
The method according to claim 15, wherein the first time domain position is the subframe or time slot where the end position of the DCI transmission resource is located; the second time domain position is the same as the first time domain position The time interval between the time domain positions is the time sum of the scheduling delay value and the offset.
The method according to claim 15, wherein the subframe or time slot where the end position of the transmission resource of the DCI is located is earlier than the first time domain position; the first time domain position is the same as the DCI The time interval between the subframes or time slots where the end position of the transmission resource is located is the scheduling delay value; the time interval between the second time domain position and the first time domain position is the offset displacement.
A data transmission method, characterized in that the method comprises:

The network device sends second configuration information to the terminal device, where the second configuration information is used to indicate a first duration value, and the first duration value is not less than a maximum difference hour corresponding to the serving cell or service beam coverage area where the terminal device is located. twice as long

The network device sends downlink control information DCI to the terminal device, where the DCI is used to schedule a first uplink transmission resource, and the first uplink transmission resource is a resource used by the terminal device to send uplink data;

The network device determines not to send data to the terminal device through downlink semi-persistent scheduling between the first time domain position and the second time domain position; the subframe or time where the end position of the transmission resource of the DCI is located The slot is earlier than the first time domain position; the time interval between the first time domain position and the subframe or time slot where the end position of the transmission resource of the DCI is located is the scheduling delay value indicated by the DCI ; The interval between the second time domain position and the first time domain position is the first time length value.
A data transmission device, characterized in that the device comprises:

a receiving unit, configured to receive first configuration information sent by the network device, where the first configuration information is used to indicate an offset;

A determining unit, configured to determine not to receive data sent by the network device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position domain position, the first time domain position is determined according to the offset, the second time domain position is determined according to the start time domain position of a first uplink transmission resource, the first uplink transmission resource is the terminal device Resources used to send uplink data.
A data transmission device, characterized in that the device comprises:

a sending unit, configured to send first configuration information to the terminal device, where the first configuration information is used to indicate an offset;

A determining unit, configured to determine not to send downlink data to the terminal device between the first time domain position and the second time domain position; wherein, the first time domain position is earlier than the second time domain position domain position, the first time domain position is determined according to the offset, the second time domain position is determined according to the start time domain position of a first uplink transmission resource, the first uplink transmission resource is the terminal device Resources used to send uplink data.
A terminal device, characterized in that it includes: a processor and a transceiver;

The transceiver is configured to receive signals or send signals; the processor is configured to execute computer-executed instructions stored in a memory, so that the terminal device executes the method according to any one of claims 1-10.
A network device, characterized by comprising: a processor and a transceiver;

The transceiver is configured to receive signals or send signals; the processor is configured to execute computer-executable instructions stored in a memory, so that the network device executes the method according to any one of claims 11-20.
A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is run on one or more processors, any of claims 1-10 A method according to one or a method according to any one of claims 11-20 is performed.
A chip, characterized in that it includes a logic circuit and an interface, the logic circuit is coupled to the interface; the interface is used to input and/or output code instructions, and the logic circuit is used to execute the code instructions to Cause the method described in any one of claims 1-10 to be performed, or cause the method described in any one of claims 11-20 to be performed.